Home / 2,861.51-3,947.49-1,800.59

Finding the Fourth Proportional to 2,861.51, 3,947.49 and 1,800.59

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Solution

The fourth proportional to 2,861.51, 3,947.49 and 1,800.59 is: 2,483.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.51 : 3,947.49 = 1,800.59 : x
  2. Step 2: Convert to fraction form
    2,861.51/3,947.49 = 1,800.59/x
  3. Step 3: Cross multiply
    2,861.51x = 3,947.49 × 1,800.59
  4. Step 4: Simplify right side
    2,861.51x = 7,107,811.02
  5. Step 5: Solve for x
    x = 7,107,811.02/2,861.51
  6. Step 6: Final answer
    x = 2,483.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.